Well, the answer is no, I hadn't checked whether the xforms captcha actually worked. The reason is that the xforms captcha doesn't appear on my forms because the forms cannot be seen unless the user is logged on in a particular group. My site uses reCaptcha since it has become apparent that the simple XOOPS captcha has been cracked. Unfortunately reCaptcha does not appear to completely prevent spurious registrations either. See here

Having said all that, I just accessed an xforms form on my test server without logging on (after making that form accessible to anon). I submitted the form without filling in the xforms recaptcha and it was accepted, sending me the email for that test form. So, the xforms captcha does not work. Dylian, I hope you see this and can fix it. I'd suggest incorporating reCaptcha if you can. There is a thread about that here

barryc.